From mboxrd@z Thu Jan 1 00:00:00 1970 From: Colin Guthrie Subject: Re: wrong decibel data? Date: Mon, 14 Jun 2010 09:33:39 +0100 Message-ID: References: <4BFE7840.4070004@ladisch.de> <20100613135349.GB5818@tango.0pointer.de> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Received: from lo.gmane.org (lo.gmane.org [80.91.229.12]) by alsa0.perex.cz (Postfix) with ESMTP id 9390C103806 for ; Mon, 14 Jun 2010 10:35:07 +0200 (CEST) Received: from list by lo.gmane.org with local (Exim 4.69) (envelope-from ) id 1OO58K-0001bz-0X for alsa-devel@alsa-project.org; Mon, 14 Jun 2010 10:35:04 +0200 Received: from brent.tribalogic.net ([78.86.109.144]) by main.gmane.org with esmtp (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Mon, 14 Jun 2010 10:35:03 +0200 Received: from gmane by brent.tribalogic.net with local (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Mon, 14 Jun 2010 10:35:03 +0200 In-Reply-To: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: alsa-devel-bounces@alsa-project.org Errors-To: alsa-devel-bounces@alsa-project.org To: alsa-devel@alsa-project.org List-Id: alsa-devel@alsa-project.org 'Twas brillig, and Raymond Yau at 14/06/10 01:25 did gyre and gimble: > if your sound card have ac97 codec ., you can use audacity to record the > output from hw:0,0 and you will see clipping occur when you set "PCM" volume > above 0dB So the standard response is "don't do that then" :) That's why the base volume is shown to the user via GUIs so that they can gauge the best point on the slider to use. Currently there is no indication with alsa sliders at which point the 0dB "sweet spot" lies. IMO this is a good improvement for usability. Col -- Colin Guthrie gmane(at)colin.guthr.ie http://colin.guthr.ie/ Day Job: Tribalogic Limited [http://www.tribalogic.net/] Open Source: Mandriva Linux Contributor [http://www.mandriva.com/] PulseAudio Hacker [http://www.pulseaudio.org/] Trac Hacker [http://trac.edgewall.org/]